Maize Starch Yield Calibrations with Near Infrared Reflectance
Marvin R. Paulsen, Lester O. Pordesimo, Mukti Singh, Steven W. Mbuvi and Binying Ye
Biosystems Engineering Volume 85, Issue 4 , August 2003, Pages 455-460
2003
บทคัดย่อ
Maize starch yield is affected by variety, environmental growing conditions, and drying conditions. one-hundred gram starch yield tests that predict actual wet milling starch yield were used as a reference method for developing an extractable starch calibration on a NIRSystems Model 6500 spectrophotometer. A maize starch yield calibration was developed from 940 samples and used to predict a validation set of 304 samples. It had a standard error of prediction (SEP) of 1.06, a coefficient of determination r2 of 0.77 and a ratio of performance to deviations (rpd) of 2.1. This indicates about 95% of similar samples could have starch yield predicted by near-infrared reflectance within about ±2.1%. The calibration should be successful in segregating maize lots for high and low starch yield percentages.